Water pollution poses a significant environmental threat, contributing to various health issues. Of the diseases discussed, diarrhoea is frequently linked to polluted water sources. Pathogens like bacteria, viruses, and parasites found in contaminated water can cause gastrointestinal infections, with diarrhoea being the most common. This condition results in dehydration and presents a heightened risk to infants and the elderly.
Conversely, conjunctivitis, respiratory infections, and bronchitis are not directly attributable to water pollution. Conjunctivitis typically stems from viral or bacterial infections, allergies, or irritants. Respiratory infections and bronchitis are primarily associated with airborne contaminants or infectious agents, rather than waterborne transmission.
| Disease | Link to Water Pollution |
|---|---|
| Diarrhoea | Commonly caused |
| Conjunctivitis | Not commonly caused |
| Respiratory infections | Not commonly caused |
| Bronchitis | Not commonly caused |
Therefore, diarrhoea is identified as the disease commonly caused by water pollution.